On Thu, 2011-09-01 at 17:55 -0700, Jeremy Fitzhardinge wrote: > From: Jeremy Fitzhardinge <jeremy.fitzhardinge@xxxxxxxxxx> > > We need to make sure interrupts are disabled while we're relying on the > contents of the per-cpu lock_waiting values, otherwise an interrupt > handler could come in, try to take some other lock, block, and overwrite > our values. Would this make it illegal to take a spinlock from NMI context? I know that its generally considered bad form, but there's at least one spinlock that's only taken from NMI context and thus hasn't got any deadlock potential. -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
